[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
@patpat, see at that top of this page, the link that says: auto-github-rhboot-shim #165 You can check the discussion there; I haven't tested any more recent upstream binaries to see if they work now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
This is still unsolved. where is "upstream" to politely request this fixed? Even if shim is highly security sensitive it's TFTP requesting the wrong server in a proxyDHCP environment. thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
The upstream bug is still unresolved, and shim is highly security sensitive code. So we need to wait for an agreed upstream fix. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
Over 1 year and 2 Ubuntu versions later (one of them LTS) and this problem is still not fixed. Even with googling this took me hours to figure out today. :/ Please fix this finally. I'd submit a patch, but I didn't write any C code, since I was around 21. If anything, I'd probably make things worse. :D -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
** Changed in: shim (Ubuntu) Status: New => Triaged ** Changed in: shim (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
** Changed in: shim Status: Unknown => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
** Bug watch added: github.com/rhboot/shim/issues #165 https://github.com/rhboot/shim/issues/165 ** Also affects: shim via https://github.com/rhboot/shim/issues/165 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
Pseudocode for UEFI/BIOS firmwares: If the DHCP server doesn't offer a boot filename, and a proxyDHCP server is available, then use the boot filename from the proxyDHCP offer, and set TFTP=proxyDHCP. Pseudocode for shim: If UEFI reports that it used proxyDHCP, then use that one for the TFTP server. No decision to be done here; the decision was already done by UEFI in the previous step. Also, note that there's no "boot filename" involved; that too, was done by UEFI in the previous step. It's just about deciding where the TFTP server is. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
*Actually you can use "boot filename = /path/to/shimx64.efi" just to derive the /path/to/grubx64.efi if you want; but that's not very important, just for TFTP directory organization. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
The PXE specification, which also describes proxyDHCP, can be found for example at: http://www.pix.net/software/pxeboot/archive/pxespec.pdf The "proof" that the proxyDHCP server should be used as the TFTP server, is the fact that shimx64.efi was indeed downloaded by the UEFI firmware from the proxyDHCP server. This is true for all UEFI and BIOS firmwares, and for iPXE and any other client that understands PXE services. Shim just needs to follow suit and use the same TFTP server where it's located at. ** Changed in: shim (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
To be more clear (some times I'm not very confident about my English): TFTP server = proxyDHCP server = where shimx64.efi is. UEFI and BIOS and iPXE and all clients, use the proxyDHCP server as the TFTP server. Shimx64.efi on the other hand, tries to download grubx64.efi from the real DHCP server, which usually isn't a TFTP server when proxyDHCP is used, and fails. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
By chance can you provide a reference to an RFC that explains the "correct" interaction between proxy DHCP servers and DHCP boot file option? Does the grub DHCP client implementation work the way you describe? ** Changed in: shim (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1813541] Re: Shim uses wrong TFTP server IP in proxyDHCP mode
Specifically, I think the issue is in https://git.launchpad.net/ubuntu/+source/shim/tree/netboot.c#n293 memcpy(&tftp_addr.v4, pkt_v4->BootpSiAddr, 4); There should be an "if proxy ... use that one for tftp ... else use BootpSiAddr" at that point. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813541 Title: Shim uses wrong TFTP server IP in proxyDHCP mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shim/+bug/1813541/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
